Tom Brokaw – the celebrated senior correspondent for NBC News – says he uses medical marijuana to treat pain connected with his cancer treatment.

Brokaw, 79, has been one of the most recognizable figures in TV news over the past 50 years as the former host of NBC Nightly News. He’s also one of the most famous patients with multiple myeloma—a form of cancer that grows in bone marrow. Doctors have treated his condition through chemotherapy and spinal surgery, which have left him with lasting pain in his back. To help control that pain, he says he has recently started using cannabis.